ZIP Codes in Costa Mesa, CA
Costa Mesa uses 2 ZIP codes, all in Orange County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Costa Mesa ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 92626 | standard | Orange | 50,708 |
| 92627 | standard | Orange | 60,393 |
Finding a ZIP+4 in Costa Mesa
Knowing which of these 2 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Costa Mesa street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Costa Mesa addresses and download it complete.